2014-03-01 16:20:09 +00:00
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;-------------------------------------------------------------------------
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; ANTIC Address Equates
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;-------------------------------------------------------------------------
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; Read Addresses
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VCOUNT = ANTIC + $0B ;vertical line counter
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PENH = ANTIC + $0C ;light pen horizontal position
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PENV = ANTIC + $0D ;light pen vertical position
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NMIST = ANTIC + $0F ;NMI interrupt status
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; Write Addresses
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DMACTL = ANTIC + $00 ;DMA control
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CHACTL = ANTIC + $01 ;character control
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DLISTL = ANTIC + $02 ;low display list address
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DLISTH = ANTIC + $03 ;high display list address
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HSCROL = ANTIC + $04 ;horizontal scroll
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VSCROL = ANTIC + $05 ;vertical scroll
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PMBASE = ANTIC + $07 ;player-missile base address
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CHBASE = ANTIC + $09 ;character base address
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WSYNC = ANTIC + $0A ;wait for HBLANK synchronization
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NMIEN = ANTIC + $0E ;NMI enable
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NMIRES = ANTIC + $0F ;NMI interrupt reset
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;-------------------------------------------------------------------------
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; Antic opcodes
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;-------------------------------------------------------------------------
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; usage example:
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;
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; ScreenDL:
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; .byte DL_BLK8
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; .byte DL_BLK8
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2017-02-24 18:06:32 +00:00
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; .byte DL_CHR40x8x1 | DL_LMS | DL_DLI
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2014-03-01 16:20:09 +00:00
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; .word ScreenAlignment
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2017-02-24 18:06:32 +00:00
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; .byte DL_BLK1 | DL_DLI
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; .byte DL_MAP320x1x1 | DL_LMS
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2014-03-01 16:20:09 +00:00
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; .word Screen
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;
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; .repeat 99
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; .byte DL_MAP320x1x1
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; .endrepeat
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2017-02-24 18:06:32 +00:00
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; .byte DL_MAP320x1x1 | DL_LMS
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2014-03-01 16:20:09 +00:00
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; .word Screen + 40 * 100 ; 100 lines a 40 byte, 'Screen' has to be aligned correctly!
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; .repeat 92
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; .byte DL_MAP320x1x1
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; .endrepeat
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;
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; .byte DL_JVB
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; absolute instructions (non mode lines)
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DL_JMP = 1
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DL_JVB = 65
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2017-02-24 18:06:32 +00:00
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; DL_BLKn display n empty lines (just background)
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2014-03-01 16:20:09 +00:00
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DL_BLK1 = 0
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DL_BLK2 = 16
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DL_BLK3 = 32
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DL_BLK4 = 48
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DL_BLK5 = 64
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DL_BLK6 = 80
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DL_BLK7 = 96
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DL_BLK8 = 112
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; absolute instructions (mode lines)
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DL_CHR40x8x1 = 2 ; monochrome, 40 character & 8 scanlines per mode line (GR. 0)
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DL_CHR40x10x1 = 3 ; monochrome, 40 character & 10 scanlines per mode line
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DL_CHR40x8x4 = 4 ; colour, 40 character & 8 scanlines per mode line (GR. 12)
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DL_CHR40x16x4 = 5 ; colour, 40 character & 16 scanlines per mode line (GR. 13)
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DL_CHR20x8x2 = 6 ; colour (duochrome per character), 20 character & 8 scanlines per mode line (GR. 1)
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DL_CHR20x16x2 = 7 ; colour (duochrome per character), 20 character & 16 scanlines per mode line (GR. 2)
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DL_MAP40x8x4 = 8 ; colour, 40 pixel & 8 scanlines per mode line (GR. 3)
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DL_MAP80x4x2 = 9 ; 'duochrome', 80 pixel & 4 scanlines per mode line (GR.4)
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DL_MAP80x4x4 = 10 ; colour, 80 pixel & 4 scanlines per mode line (GR.5)
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DL_MAP160x2x2 = 11 ; 'duochrome', 160 pixel & 2 scanlines per mode line (GR.6)
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DL_MAP160x1x2 = 12 ; 'duochrome', 160 pixel & 1 scanline per mode line (GR.14)
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DL_MAP160x2x4 = 13 ; 4 colours, 160 pixel & 2 scanlines per mode line (GR.7)
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DL_MAP160x1x4 = 14 ; 4 colours, 160 pixel & 1 scanline per mode line (GR.15)
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DL_MAP320x1x1 = 15 ; monochrome, 320 pixel & 1 scanline per mode line (GR.8)
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; modifiers on mode lines...
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DL_HSCROL = 16
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DL_VSCROL = 32
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DL_LMS = 64
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; general modifier...
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DL_DLI = 128
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